Typewriting machine



Nov. 30 1926.

G. G. GOING TYPEWRITING MACHINE Filed August 19 1925 INVENTOR.

W A TYPORNEY 5 an. @W ESQ V m w N 9 WITNESSES Patented Nov. 30, 1926.

oar-r ee; STATES raw LESS ryrnwnrrnn CORPORATION, are new rena,

YORK.

it. aeeaeeaama on new rYenwntrine MACHINE.

Application filed August 19, 1925. Serial No. 51.125.

My invention relates primarily to carria ge bearings for typewriting machines, and its main object is to {provide new and improved carriage or like bearings for such machines.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, combination otdeviccs, and arrangements of parts hereinafter described and particularly pointed out in the claims.

In mounting the carriageof a typewriting inachineo'n itssupport or bearing, it is highly important, in order to ObtELlIl the best results, that the carriage and its bearings shall be so related that the carriage may move treely back and forth during its travels and yams be so loose that-it is not firmly supported. The difiiculty comes 111 so adjusting the carriage to its bearing that there shall be no rattle or midue looseness on the one bench-and, on the other hand, that it may not'be so tightly heldthatit will bind, check or move sluggishly during its travel. In orderto facilitate theproper coa'elationship between the carriage audits mounting, which in the present instance comprises two relatively adjustable ra ls or ways. I provide for connecting the rail partstogether at their ends by means of tie-pieces or links, which co-ogerate with eccentrics to alicid line or nice adjustments of the rail parts. Then after theyliave been suit-ably co-related by meansot the tie-pieces and eccentrics, the rail parts-are secured together at intervals :along their lengths by clamping screws, the tie-pieces and eccentrics holding the rail parts against relative displacement while the screws are beingtightened to fix said parts in perma- .nent relationship.

The invention-will be described in detail in c'oiinectionwith the accon'ip'anying drawings, wherein-- Figure 1 is a fragmentary transverse sec tional view of the carriage and mounting of a' No. lte'mingtonlloiseless typewriting machine, to which my invention is shown as applied.

Fig'u're2 is a plan View of said carriage fandits inoi'uiting or hearing, 'parts being broken-away tor the sake of cleatness.

Figure 3 -is a "tragmentaryiend view show-' ingthe carriage bearing as seen .fromthe right-hand end, the carriage bar being shown in section'and the parts being drawn to a larger scale than Fig. 1.

Figure 4t is a fragmentary sectional view taken on a plane 'indicated by the section line 1-1 in Figure 2, and looking in the direction oi the arrows at said line, Figure 4 being drawn to a larger scale than Figure 2, however.

Figure 5 is a fragmentary sectional view taken on a plane indicated by the section line 22 in Figure 4 and looking in the direction of the arrows at said line.

Figure 6 is a fragmentary perspective view of the carriage bearing and certain of the adjusting devices, the parts being separated or spread tor the sake otclearness.

In the machine the usual platen 1 is mounted ona carriage comprising end bars 2 which are connected below the platen by a cross bar 3. The cross-bar is oppositely grooved at its front and rear to receive ant-itriction rollers e which cooperate also with a carriage supporting member. In the present instance the supporting member is trough-like in cross-section and comprises two guide rail parts or elements which are adapted to be adjustably secured together. The front or main part 5 is angularly shaped in crosssection comprising an uprightportion and a horizontally disposed or bottomportion, the two portions being integrally tcrmed. The other or secondary part- 6 is at the rear and is adapted to be adjnstably fixed to the main part 5 in a novel manner herein-gutter described. The parts 5 and 6comprising; the carriage rail or trachway are oppositely grooved to provide ways tor the anthtriction rollers lwhereby thecarriage is adapted to move or travel endwisc along therails during typewriting; operations. Atthe under side of "the rail, lugs 7 project downwardly from the horizontal portion of the part 5 and are pivotally connected at 8 witlrarms 9 which are secured to a rock shaftlt). said shah; bearing-in parts 11. The shaft 10 is adapted to be rocked to'shittthe carriage rail 5, t3, the carriage 2, 3, and the platen l lup and down to change case, as fully disclosed in mypending application Sr. No. 14,100, filed March 9, 1925.

irranged between the rail parts 5 and 6 is a rack plate 12 which is one of the elements of roller controlling mechanism whereby the anti-friction rollers 4: are maintained properly spaced apart during the carriage travel. The rack 12 is clamped between the rail parts by the rail-securing devices.

The rail securing devices comprise headed screws 13 which are arranged at intervals along the carriage rail or hearing, in the present instance four of these screws being shown. The screws pass upward freely through enlarged holes 14 in the rail part 5 and are threaded into tapped openings in the rail part 6. l Vashers 15 are arranged between the heads of the screws 13 and the under face of the rail part 5, these washers covering the bottoms of the holes 1 1-. Said holes are of such diameter as to afford the necessary variation in the relationship of the two rail parts 5 and 6 in a horizontal direction. It will be understood that when the screws 13 are tightened, the rail parts 5 and 6 are securely held in fixed relationship,

and also when the screws are loosened the space between the shanks of the screws and the walls of the holes 14 will permit the rail part 6 to be moved a slight distance back and forth in a horizontal direction on the part 5. The heads of the screws 13 may be hexagonal as shown to facilitate adjustments.

In order to hold or secure the rail parts when the screws 13 are loose or are not in place, means are provided comprising tie pieces or links 16 arranged at the ends of the rail parts. The tie pieces are horizontally disposed and lie against the ends of the two-part rail. At their forward ends the tie pieces are secured to the ends of the rail parts 5 by headed screws 17, these screws when loose affording a pivotal movement of the tie pieces, since the holes 18 in the tie pieces, through which the shanks of the screws pass, are not tapped, only the holes 19 in the rail part 5 being threaded to cooperate with the threads of the screws. At their rear end portions the ties or links 16 are enlarged, as indicated at 16*, and are adapted to be secured to the rail parts 6 by screws 20. These screws co-operate indirectly, however, with the tie pieces. They co-act directly with eccentric devices composed each of a hexagonal head 21 and a cylindrical body portion 22, which fits rotatively in a hole or eye in the part 16 of the associate tie piece. The shanks of the screws 20 pass freely through smooth openings 24. in the associate eccentric devices 21, 22, each hole 24 being eccentrically related to the cylindrical portion 22. After passing through the hole 24 the shank of the screw 20 is threaded into a tapped opening 25 in the end of the rail part 6. The construction is such that when the screws 20 are tightened, the heads 20 thereof exert a pressure against the heads or flanges 21 of the eccentrics, which pressure is transmitted by the opposite or inner faces of the heads 21 to the outer faces of the tie plate portions 16 thus clamping the tie-pieces between the eccentric heads 21 and the faces of the rail parts 6. to insure an effective clamping action the depth of the eccentric part is less than the depth of the hole 23, as is clearly apparent from Fig. 1, so that the inner face of the eccentric cannot contact with the face of the part 6, thus preventing any possible looseness between the eccentric heads 21 and the rail parts 6 when the screws 20 are tight ened.

From what has been said, it will be understood that preliminary to adjustment the screws 13 are held. loosely in place and the screws 17 and 20 are also loose so that the tie pieces or eccentric straps 16, 16*, are free or unclamped. is apparent that by applying a tool to the eccentric heads 21, the eccentrics may be turned slightly in either direction, thus reacting on the tie pieces or straps 16 through the holes or eyes 23, causing the tie-pieces either to draw the rail parts slightly closer or to force them slightly further apart. This enables nice adjustments of the rail parts 5, 6 to be made with ease and facility so that they will co-operate through the antifriction rollers 1 with the carriage bar 3 to obtain exactly the results desired, enabling the carriage to move freely in its bearings and yet holding it so that undue looseness is prevented. When the rail parts have been adjusted in the desired relationship the screws 20 and 17 at the opposite ends of the rail parts are tightened, thus securing the rail parts at their ends in'adjusted relationship. The screws 13 may thereafter be tightened to pern'ianently set or fix the rail parts throughout their lengths without dis turbing their adjustments, the eccentrics and the tie-pieces serving as holding devices to hold the two parts of the bearing pending this tightening of the clamping screws or securing devices 13.

Various changes may be made without departing from my invention.

What I claim as new and desire to secure by Letters Patent is 1. In a typewriting machine, the combi nation of a two-part carriage bearing, separate connecting tie-pieces arranged at opposite ends of said two-part bearing, and

means for securing the tie-pieces to the two parts of the bearing, said means comprising eccentric devices.

2. In atypewriting machine, the combination of a traveling carriage, carriage rails, and means for adjustably securing said rails in fixed relationship, said means comprising a pair of tie-pieces and co-operating eccentrio devices, said tie-pieces being arranged at opposite ends of the carriage rails.

In order Vviththe parts so related it till til)

3. In a typewriting machine, the combination of a traveling carriage, a two-part carriage rail, and means for adjustably securing said rail parts in fixed relationship, said means comprising tie-pieces separate from both parts of said carriage rail and adjustably connecting the ends of said two parts.

In a typewriting machine, the combination of a traveling carriage, a two-part carriage rail, devices arranged at intervals lengthwise of the two rail parts for adjustably securing them together, and adjustable devices for variably holding the two parts in desired relationship before said. securing de vices are rendered effective.

5. In a typewriting machine, the combination of a traveling carriage, carriage rails, devices arranged at intervals lengthwise of the two rails for securing them together, and adjustable devices for holding the rails in desired relationship before said securing devices are rendered efiective, said adjustable devices comprising tie-pieces arranged at the ends of the rails.

6. In a typewriting machine, the combination of a traveling carriage, guide rails therefor, devices arranged at intervals lengthwise of said rails for securing them together, and holding devices for holding said rails in desired relationship before said securing devices are rendered effective, said holding devices comprising tie-pieces arranged at the ends of the rails and eccentric devices adjustable on one rail and co-operating with end portions of the tie-pieces.

7. in a typewriting machine, the combination of a traveling carriage, a two-part carriage rail comprising an angular main part and a secondary rail part, clamping screws for securing the two parts together in adjusted relationship, said screws being arranged at intervals lengthwise of the two parts and passing through enlarged holes in one part to engage in threaded openings in the other part, and holding devices for holding the two parts in desired relationship before the screws are tightened, said holding devices comprising links pivotally connected at their ends to the two parts.

8. In a typewriting machine, the combina tion of a traveling carriage, a two-part carriage rail comprising an angular main part and a secondary part, clamping screws for securing the two parts together in adjusted relationship, said screws being arranged at intervals lengthwise of the two parts, and holding devices for holding the two parts in desired relationship before the screws are tightened, said holding devices comprising links pivotally connected at their ends to the two parts and also eccentric devices adapted to be clamped to one of the parts and co-operating with end portions of said links.

9. In a typewriting machine, the combination of a traveling carriage comprising a grooved bar, a platen on said carriage, a trough-like carriage rail composed of a main part and a secondary part, said parts being provided with oppositely facing grooves,

anti-friction rollers co-operating with said grooves and also with said grooved carriage bar, screws arranged at intervals lengthwise oi the two rail parts and adapted to clamp them together in fixed variable relationship, tie links arranged at the ends of the two rail parts, screws one for securing the end of each tie link to said main part, eccentric devices cooperating with eyes in the other ends of said tie links, and screws for clamping said eccentric devices adjustably to the secondary rail part.

10. In a twpewriting machine, the combination of a traveling carriage, separate guide rail parts along which the carriage travels, and means adjustably connecting said rail parts at their ends comprising eccentrics, eccentric straps and devices for clamping said eccentrics and straps after adjustment.

11. In a typewriting machine, the combination of a. traveling carriage, separate gulde rail parts along which said carriage travels, securing devices for securing the rail parts together at their ends, and other securing devices for securing the rail parts together at intervals along their lengths, the end-securing devices being adjustable and serving also as holding devices pending the tightening of said other securing devices.

Signed at Middletown, in the county of Middlesex, and State o1 Connecticut, this 15th day of August, A. D. 1925,

GEORGE G. GOING. 

